Update DialogFragment UI when BT device is add/remove/rename

* Add AudioSwitchCallback() in AudioSwitchPreferenceController.
  This callback is used to notify SoudSettings to update the dialogFragment UI.
* Add UpdatableListPreferenceDialogFragment that updates the available
  options when dialog is shown
* Add test to verify the adapter count when
  onListPreferenceUpdated() is called.

Bug: 77783217
Test: make -j50 RunSettingsRoboTests
Change-Id: I8cac1b30ec50df026f4b7722dd1cd2f69e77a4cb
Merged-In: I8cac1b30ec50df026f4b7722dd1cd2f69e77a4cb

src/com/android/settings/sound/AudioSwitchPreferenceController.java

@@ -78,6 +78,7 @@ public abstract class AudioSwitchPreferenceController extends BasePreferenceCont
     protected final LocalBluetoothProfileManager mProfileManager;
     protected int mSelectedIndex;
     protected Preference mPreference;
+    protected AudioSwitchCallback mAudioSwitchPreferenceCallback;
 
     private final AudioManagerAudioDeviceCallback mAudioManagerAudioDeviceCallback;
     private final LocalBluetoothManager mLocalBluetoothManager;
@@ -85,6 +86,10 @@ public abstract class AudioSwitchPreferenceController extends BasePreferenceCont
     private final WiredHeadsetBroadcastReceiver mReceiver;
     private final Handler mHandler;
 
+    public interface AudioSwitchCallback {
+        void onPreferenceDataChanged(ListPreference preference);
+    }
+
     public AudioSwitchPreferenceController(Context context, String preferenceKey) {
         super(context, preferenceKey);
         mAudioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);
@@ -207,6 +212,10 @@ public abstract class AudioSwitchPreferenceController extends BasePreferenceCont
     public void onDeviceBondStateChanged(CachedBluetoothDevice cachedDevice, int bondState) {
     }
 
+    public void setCallback(AudioSwitchCallback callback) {
+        mAudioSwitchPreferenceCallback = callback;
+    }
+
     protected boolean isStreamFromOutputDevice(int streamType, int device) {
         return (device & mAudioManager.getDevicesForStream(streamType)) != 0;
     }
@@ -335,6 +344,7 @@ public abstract class AudioSwitchPreferenceController extends BasePreferenceCont
         listPreference.setEntryValues(mediaValues);
         listPreference.setValueIndex(mSelectedIndex);
         listPreference.setSummary(mediaOutputs[mSelectedIndex]);
+        mAudioSwitchPreferenceCallback.onPreferenceDataChanged(listPreference);
     }
 
     private int getConnectedDeviceIndex(String hardwareAddress) {